Railway-switch stand.



Patented lan. 29, |901. E. B. ENTW|SLE. RAILWAY SWITCH STAND.'

(Application led'Jnne 15, 1900.)

(No Model.)

Wl TNE SSE S r UNITED STATES' PATENT FFICE.

EDWARD B. ENTWISLE, OF JOHNSTOW N, PENNSYLVANIA, ASSIGNOR TO THE LORAINSTEELy COMPANY, OF PENNSYLVANIA.

RAILWAY-SWITCH STAIN D.

SPECIFICATION forming part of Letters Patent No. 666,926, dated January29, 1901.

Application filed June 15, 1900. Serial No. 20,445. (No model.)

To all whom, it Inn/,y concern:

Be it known that I, EDWARD B. ENTWIsLE, of Johnstown, in the county ofCambria and State of Pennsylvania, have invented a new and usefulImprovement in Railway-Switch Stands, of which the following is a full,clear, and exact description, reference being had to the accompanyingdrawings, which form a part of this specification.

My invent-ion has relation to certain new and useful improvements inrailway-switch stands or ground-switch throws, and is designed toimprove that class of switch standsY or throws in which theoperating-lever is moved in a direction parallel to the track instead ofat right angles thereto and also to provide a compact, desirable, andefficient device of this character.

With these objects in view my invention consists in the novelconstruction and combination of parts, all as hereinafter described, andpointed out in the appended claims, reference being had to theaccompanying drawings, forming a part of this specification.

In the drawings, Figure l is a plan view of my improved switch-stand.Fig. 2 is a secf tion on the line 2 2 of Fig. l. Fig. 3 is a side viewof the base-plate. Fig. 4 is a plan view of the same. Fig. 5 is a detailview of the liner or bushing, and Fig. 6 is a detail view showing themeans by which the barrel or cylinder is given longitudinal movement.

The letter A indicates a bottom or base plate designed to be spiked tothe wooden track-ties. Y

B is a hollow cylindricallshell, one end portion of which is rotatablyseated in a transverse concave bearing A in the base-plate and securedagainst displacement by a strap C, fitting over its upper portionbetween flanges c thereon and bolted to the base-plate. A

an exterior helical rib or'iin E2, which is engaged by a groove in asegmental lug F on the interior of the shell B. On the outer end of thecylinder or barrel E is secured a cap G, which partially Iits within theshell B.

H is the switch-rod, which extends through the barrelE and also throughthe cap G, its outer end being secured by a nut g.

I I/ are two cones which are loosely seated on thesWitch-rod within thebarrel E, the

cone I seating back against the cap G and the cone Il seating against aninterior shoul- -against rotary movement, the engagement of the groovedlug F with the helical iin or rod E will necessarily impart an endwisemovement to the said barrel to the left, (looking at Fig. 1,) therebycompressing the spring J, which acts to throw the switch, thecompression being effected through the movement of the cone I. Upon thereverse or return movement .of the lever D the barrel E is moved to theright, thereby moving thecone I against the spring and compressing itfrom the oppo- 'site direction to eifect the reverse throw of theswitch. In assembling the parts the springJ is given some initialcompression,

and inasmuch as the endwise movement of the barrel E is appreciablygreater than the movement required to throw the switch the resultingcompression of said spring is not only sufficient to move the switch,butit also assists the initial movements of the lever D. The arrangementof the spring, it will be seen, permits the Vrod to yield in eitherdirection in case a train should trail through the switch.

L indicates lugs on the base-,plate A, over which a loop or hasp on thelever D may be slipped and locked in the usual manner.

In order to facilitate assembling the parts and to provide a properbearing for the shell ICO B,the concave bearingA/ is made deep enough toreceive a semicylindrical liner or bushing P, which is slipped in placeafter the shell and its adj uncts have been assembled on the base-plate.This liner or bushing is of the proper width to lit between the flangesc. It will be readily seen that if the bottom of the bearing A' wasitself formed to fit the shell the shell could not be seated, because ofthe necessity for entering the angular portion E' of the barrel E in theopening a at the same time.

I do not wish to limit myself to the exact construction, arrangement,and combination of parts which I have herein shown and described, asthese may be varied in detail without departing from the spirit andscope of my invention.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is-

l. In a switch stand or throw of the character described,the combinationof a base-plate, having a concave bearing therein, the hollow shellseated in said bearing, and formed with circumferential llanges, theliner or bushing seating in said bearing and fitting between saidflanges, the strap securing said shell against longitudinal movement,the barrel seated in said shell, and held against rotary movement, meansfor rotating said shell, means whereby rotary movement of the shellelects longitudinal movement of said barrel, a switch-rod, and a double-acting spring through which the movements of said barrel are impartedto the switch-rod.

2. In a switch stand or throw of the character described, thecombination of the rotary shell, having aninterior lug formed with asegmental helical groove, the level' connected to said shell, the barrelwithin said shell held against rotary movement, but free to move EDlVARDB. ENTVVISLE.

Witnesses:

BLANCHE M. SMITH, H. W. SMITH.

